Around 12,000 Seattleites will wage a massive water balloon war on August 17 at Seattle Center to attempt breaking the Guinness World Record.

The event is part of Party Camp, a one-day adult summer camp experience designed to raise money for Camp Korey, a local nonprofit that gives kids with serious medical conditions camp experiences at no cost.

Participants will throw 300,000 water balloons in the fight in an effort to break the current Guinness World Record for largest water balloon fight, which was set by the University of Kentucky in 2011 with 8,957 participants and unofficially broken by the students with 11,660 participants last year.

The event's organizers are local young professionals who say that the best way to raise money for kids is to remember what it's like to be one. Last January, they raised $50,000 for the Boys &Girls Club of King County with their Snow Day event at Seattle Center, which included a massive snowball fight that broke the world record.

The Party Camp team has put out a call for participants and volunteers to fill balloons. Volunteers will receive a Party Camp T-shirt for one shift of balloon filling, and free admission to the event if they work a second shift.

Tickets for Party Camp are $25, with a $12 Early Bird deal available through Living Social for a limited time. More information can be found at the Party Camp website.

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